{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2025-40137",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-40137",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-11-12T10:23:23.624Z",
    "updatedAt": "2026-05-11T21:43:28.448Z",
    "importedAt": "2026-10-24T01:57:34.152Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "f2fs: fix to truncate first page in error path of f2fs_truncate()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to truncate first page in error path of f2fs_truncate()\n\nsyzbot reports a bug as below:\n\nloop0: detected capacity change from 0 to 40427\nF2FS-fs (loop0): Wrong SSA boundary, start(3584) end(4096) blocks(3072)\nF2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock\nF2FS-fs (loop0): invalid crc value\nF2FS-fs (loop0): f2fs_convert_inline_folio: corrupted inline inode ino=3, i_addr[0]:0x1601, run fsck to fix.\n------------[ cut here ]------------\nkernel BUG at fs/inode.c:753!\nRIP: 0010:clear_inode+0x169/0x190 fs/inode.c:753\nCall Trace:\n <TASK>\n evict+0x504/0x9c0 fs/inode.c:810\n f2fs_fill_super+0x5612/0x6fa0 fs/f2fs/super.c:5047\n get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1692\n vfs_get_tree+0x8f/0x2b0 fs/super.c:1815\n do_new_mount+0x2a2/0x9e0 fs/namespace.c:3808\n do_mount fs/namespace.c:4136 [inline]\n __do_sys_mount fs/namespace.c:4347 [inline]\n __se_sys_mount+0x317/0x410 fs/namespace.c:4324\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nDuring f2fs_evict_inode(), clear_inode() detects that we missed to truncate\nall page cache before destorying inode, that is because in below path, we\nwill create page #0 in cache, but missed to drop it in error path, let's fix\nit.\n\n- evict\n - f2fs_evict_inode\n  - f2fs_truncate\n   - f2fs_convert_inline_inode\n    - f2fs_grab_cache_folio\n    : create page #0 in cache\n    - f2fs_convert_inline_folio\n    : sanity check failed, return -EFSCORRUPTED\n  - clear_inode detects that inode->i_data.nrpages is not zero",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "92dffd01790a5219d234fc83c3ba854f4490b7f4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "83a8e4efea022506a0e049e7206bdf8be9f78148"
            },
            {
              "version": "92dffd01790a5219d234fc83c3ba854f4490b7f4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a7b7ebdd7045a36454b3e388a2ecf50344fad9e6"
            },
            {
              "version": "92dffd01790a5219d234fc83c3ba854f4490b7f4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3b0c8908faa18cded84d64822882a830ab1f4d26"
            },
            {
              "version": "92dffd01790a5219d234fc83c3ba854f4490b7f4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9251a9e6e871cb03c4714a18efa8f5d4a8818450"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.19",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.19"
            },
            {
              "version": "6.6.112",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.53",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.17.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "version": "6.18",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}